File:Sandstones (Casper Formation, Middle Pennsylvanian to Lower Permian; near Ayres Natural Bridge, Wyoming, USA) 24 (49144666953).jpg
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| Description |
Sandstones in the Upper Paleozoic of Wyoming, USA. These cliffs form the walls of a narrow gorge cut by LaPrele Creek in eastern Wyoming. Just upstream from here is Ayres Natural Bridge, a rare erosional feature that spans the stream. The rocks themselves are Upper Paleozoic sandstones of the Casper Formation The colors are from iron oxide (hematite, Fe2O3). The tilted layers are cross-bedding, which forms in a one-directional current by wind or water. Stratigraphy: Casper Formation (also known as the Tensleep Formation), Middle Pennsylvanian to Lower Permian Locality: Ayres Natural Bridge over LaPrele Creek, southern end Natural Bridge Road, south of Interstate 25, west of the town of Douglas, Converse County, eastern Wyoming, USA See info. at: <a href="https://en.wikipedia.org/wiki/Ayres_Natural_Bridge_Park" rel="noreferrer nofollow">en.wikipedia.org/wiki/Ayres_Natural_Bridge_Park</a> |
| Date | |
| Source | Sandstones (Casper Formation, Middle Pennsylvanian to Lower Permian; near Ayres Natural Bridge, Wyoming, USA) 24 |
| Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/49144666953 (archive). It was reviewed on 2 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 06:25, 2 December 2019 | | 3,008 × 2,000 (4.25 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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